It is understood that China's four-dimensional image data are all from DigitalGlobe, an American commercial satellite data provider. China Siwei is the general agent of American companies in China, and owns the general agent rights of QuickBird, WorldView 1 and WorldView2. DigitalGlobe is a global commercialization leader in the field of high-resolution images and a satellite image provider of Google Maps.
Compared with other commercial maps, the satellite map launched by Baidu Map is relatively late, and Google Map launched the satellite map as early as 2005. At present, Google Maps also has unique map modes such as terrain and 45%. Sogou Map also launched satellite map service in 2008, and the data of sogou satellite map also came from DigitalGlobe. The sky map launched by the State Bureau of Surveying and Mapping on 20 10 also has the function of satellite map, and the data of satellite map of sky map also comes from DigitalGlobe.